Tire-plug.



No. 64l,252. Patented Ian. 9', I900. F. B. PARKS.

TIRE PLUG.

(Appliation filed Apr. 18, 1899.)

(No Model.)

Witnesses. Inventor.

- F d B. 7 51-7 Attorney.

m: Monms PETERS 00.. PHOTO-LITHO WASHINGTON, n. c.

FRED B. PARKS, OF GRAND RAPIDS, MICHIGAN.

TIRE-PLUG.

SPECIFICATION forming part of Letters Patent N 0. 641,252, dated January 9, 1900.

To all whom it may concern:

Be it known that I, FRED B. PARKS, a citizen of the United States, residing at Grand Rapids, in the county of Kent and State of Michigan, have invented certain new and useful Improvements in Tire-Plugs, of which the following is a specification.

My invention relates to improvements in plugs for closing punctures in pneumatic tires; and its object is to provide a plug, or rather a case for plugs, that will enable me to hermetically close large punctures in pneumatic tires without the necessity of vulcanizing. I attain this result by the mechanism illustrated in the accompanying drawings, in which- Figure 1 is a perspective of my device having a flange at each end, and Fig. 2 is a section of pneumatic tubing with my case in place and showing the manner of introducing the plug proper.

' Similarletters refer to similar parts throughout both views.

My plug or casing is constructed with a body A and a broad flange a, radiating from the end thereof in position so that when the body is passed through the puncture the flange Will rest against the inner surface of the tube, eX actly as the head of a plug rests against the inner surface of a tube when inserted. Iform an aperture 01 entirely through this casing, which enables me, first, to pass a properlyformed implement, as D, through, press or smooth the flange against the surface of the tube until the cement has time to dry, and hold the flange securely to place, thus averting the danger of the flange warping and drawing away from the surface and leaving a vent through which the air may escape, which often happens when an ordinary solid plug is applied, and, second, when this casing is secured to place I can place an ordinary plug, as A, into the case, and havinga double thickness of pure rubber instead of a single thickness of rubber and canvas mixed, as is the case when plugging through a single thickness of tire with an ordinary plug, I am enabled to cement my plugs perfectly and avert all danger arising from the warping of the Application filed April 13, 1899. Serial No. 712,950. (No model.)

is to secure it with a string, as O, which is passed through the aperture in the casing, and the plug is forced through the puncture into the tube. Then the casing is forced through the puncture, and after the flange is securely cemented by pressing it against the surface of the tube with the arm dof the implement D the plug is drawn up into the casing, as indicated by the dotted lines in the casing in Fig. 1, so that the body may be ccmented into the aperture a, and the flange will rest against the surface of the flange a of the casing, and then both the casing and the plug are cut off at the outer surface of the tube, as at the line 00 w in Fig. 2. This casing is particularly advantageous for use in tires having a foundation of canvas, as the object that makes the puncture tears the canvas, and the threads are likely to be carried back with the plug when inserted and hold the flange of the plug away from the surface of the tube, so that it is impossible to form an air-tight joint, which difficulty is overcome by the use of the implement D with the casing herein described. Asecond advantage gained by the use of this casing is that it, being hollow and very flexible,will adaptitself to almost any form of puncture.

The use of a flange at each end of the plug, as in Fig. 1, is simply for the purpose of econ omy. Byits use I- am enabled to insert one end and cut it off so as to leave sufficient length of body to insert the other end, thus saving nearly the length of one body upon each two punctures.

Having thus fully described my invention, What I claim as new, and desire to secure by Letters Patent of the United States, is-- In a tire-plug casing, a body having an aperture entirely through it to form a cylindrical wall of uniform thickness, and a thin flange radiating from the end of the cylindrical wall, substantially as, and for the purpose set forth.

Signed at Grand Rapids, Michigan, March 31, 1899.

FRED B. PARKS.

In presence of- ANDREW ALLGIER, A. W. J OANNES. 

